CN116845552B - A high-gain vehicle-mounted optically transparent antenna with improved radiation pattern - Google Patents
A high-gain vehicle-mounted optically transparent antenna with improved radiation patternInfo
- Publication number
- CN116845552B CN116845552B CN202310866291.1A CN202310866291A CN116845552B CN 116845552 B CN116845552 B CN 116845552B CN 202310866291 A CN202310866291 A CN 202310866291A CN 116845552 B CN116845552 B CN 116845552B
- Authority
- CN
- China
- Prior art keywords
- antenna
- strip
- radiation
- substrate
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
Landscapes
- Details Of Aerials (AREA)
Abstract
本发明公开一种具有方向图改善的高增益车载光学透明天线，工作在0.74‑0.87GHz。本发明包括基板、天线本体、系统地板；基板包括PET薄膜层、OCA胶层、PC介质基板；天线本体由两个梯形的辐射贴片、反向抵消条带、馈线、与天线位于同一层的系统地板组成，两个梯形辐射贴片通过反向抵消条带将其较长的底边连接。其透明性主要得益于采用了透明基板材料和薄且细微的金属线构成的金属网格结构，并通过级联的梯形辐射贴片以及连接的反向辐射条带获得高增益、宽带宽、水平方向图零点改善等性能提升。本发明能够实现在工作频带能够达到70％以上的光学透明度，65％以上的辐射效率以及3dB以上的方向图零点改善。
This invention discloses a high-gain vehicle-mounted optically transparent antenna with improved radiation pattern, operating in the 0.74-0.87 GHz range. The invention includes a substrate, an antenna body, and a system ground plane. The substrate comprises a PET film layer, an OCA adhesive layer, and a PC dielectric substrate. The antenna body consists of two trapezoidal radiating patches, a reverse cancellation strip, a feed line, and a system ground plane located on the same layer as the antenna. The two trapezoidal radiating patches are connected by the reverse cancellation strip, which links their longer base edges. Its transparency is primarily achieved through the use of a transparent substrate material and a metal mesh structure composed of thin and fine metal wires. The cascaded trapezoidal radiating patches and the connected reverse radiation strip achieve performance improvements such as high gain, wide bandwidth, and improved horizontal radiation pattern nulls. This invention can achieve optical transparency of over 70%, radiation efficiency of over 65%, and radiation pattern null improvement of over 3 dB in the operating frequency band.
Description
Technical Field
The invention belongs to the technical field of electromagnetic fields and microwaves, relates to a high-gain vehicle-mounted transparent antenna with improved directivity patterns, and particularly relates to a high-gain vehicle-mounted transparent antenna with high gain, low side lobe, improved directivity patterns and optical transparency, which specifically works in the frequency band of 0.74GHz-0.87 GHz.
Background
The antenna is used as a key component of intelligent networking systems such as wireless communication, wireless networks, satellite positioning and the like. Play a key role in transceiving signals in a wireless communication system. Along with the rapid development of 5G automobile intellectualization, automatic driving and Internet of things, the demand of a new generation intelligent automobile for antennas is higher and higher. The quality of the antenna directly determines the overall performance of the whole intelligent network-connected automobile system. Common conventional vehicle antennas are roughly classified into whip antennas, shark fin antennas and built-in antennas. Whip antennas are often more commonly mounted on older vehicles, and tend to have longer physical dimensions, which also results in greater signal collection capabilities. But at the same time increases the windage of the car and may cause the antenna to break when traveling through a short area or tunnel. Compared with whip-shaped antennas, most of the vehicles currently adopt shark fin antennas with more beautiful and smaller wind resistance, and the shark fin antennas also have the function of releasing static electricity. But often have inferior signal acceptance in some special situations as compared to conventional antennas. The built-in antenna is also called a concealed antenna, and is widely used because of its characteristics of being integrally formed with a vehicle body, not affecting the overall aesthetic appearance of the vehicle, and not bringing additional wind resistance. However, since the antenna is placed in the interior of the automobile, it is often affected by the metal frame of the automobile body, resulting in a decrease in signal receiving ability. The common vehicle-mounted antenna has certain advantages and disadvantages, so that the novel antenna design which has attractive appearance, does not influence the running wind resistance of the automobile, has good signal receiving capability and has high gain becomes particularly important.
An optically transparent antenna is a potential solution to the problem, and is often applied to a glass or transparent dielectric substrate, which is also called a glass antenna. As a hot spot direction of current antenna research, glass antennas have many related researches on the problems of expanding the bandwidth, realizing dual polarization, obtaining high isolation, high power capacity and the like. Compared with the traditional antenna, the glass antenna has the advantages of being transparent in whole, high in attractive degree and flexible to install, enabling the performance index (gain, radiation efficiency, wave speed width, directivity and the like) of the traditional antenna to be comparable to that of the traditional metal antenna, and being small in size, light in weight and hidden. The current research on glass antennas covers aspects, but the research on vehicle-mounted glass antennas is not so much. Glass antennas can be attached to automotive glass for better signal reception due to their good optical transparency. The characteristic of being placed close to the glass does not affect the running wind resistance and the appearance of the automobile. Therefore, the glass antenna is a novel vehicle-mounted antenna alternative scheme with high feasibility.
However, unlike indoor glass antenna applications, vehicle front windshields are often designed with a tilt angle to reduce windage, but this also results in antenna patterns that are not omnidirectional in the horizontal plane but have nulls at certain angles. The signal will not be accepted and transmitted at the null point, which will greatly affect the reliability of the vehicle antenna. Therefore, a vehicle transparent antenna with improved horizontal plane pattern nulling becomes particularly important.
The invention provides a high-gain vehicle-mounted transparent antenna with an improved directional diagram, and the optical transparency principle is that a transparent substrate material (PC substrate, OCA (OpticallyClearAdhesive) glue and PET (polyethylene terephthalate) film) is selected, and a metal grid consisting of sufficiently fine metal wires is utilized to realize the electrical interconnection and optical transparency of a metal layer. The optical transparency is related to the distance between the metal grids and the thickness of the metal wires, and the antenna radiation efficiency and the optical transparency can be effectively considered by selecting a proper metal grid process. The antenna and the substrate are designed to be L-shaped for better embedding into the vehicle window and connecting with the feeder line. The main body radiation part of the antenna is provided with two radiation patches, the working frequency of the antenna is determined by adjusting the length of the radiation patches, and the bandwidth of the antenna can be ensured to cover the frequency range of 0.74GHz-0.87GHz by adjusting the width of the patches. The radiation working principle is that the radiation modes of two serially connected radiation patches are in the same direction by adjusting the shape and the length of the reverse offset strip, so that the effects of high gain are formed by superposition. Finally, the pattern zero point on the horizontal plane can be obviously improved (-3 dB improvement) by replacing the design of the traditional rectangular radiation patch with a trapezoidal patch.
Disclosure of Invention
Aiming at the defects of the existing traditional vehicle-mounted antenna in appearance and low signal receiving capacity, the invention provides the high-gain vehicle-mounted transparent antenna of the rectangular patch, and the signal receiving zero point can be caused to appear on the horizontal plane due to the fact that the vehicle-mounted front window glass is always provided with an inclination angle during installation.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
A high-gain vehicle-mounted transparent antenna with improved directivity pattern comprises a substrate (1), an antenna body and a system floor (2);
the substrate (1) is L-shaped and sequentially comprises a PET film layer (1-1), an OCA adhesive layer (1-2) and a PC medium substrate (1-3) from top to bottom, wherein the PET film layer (1-1) is used as a growth substrate of a metal grid, and the OCA adhesive layer (1-2) is used for connecting the PET film and the PC medium substrate (1-3);
the antenna body is positioned on the upper surface of the substrate (1) and comprises two axisymmetrically arranged trapezoidal radiation patches (3), a reverse offset strip (4) and a microstrip feeder line (5);
The long bottom edges of the two trapezoid radiation patches (3) are respectively connected with two ends of the reverse offset strip (4);
The system floor (2) is positioned on the upper surface of the base plate (1), and the system floor (2) is L-shaped and is suitable for feeding of a vehicle-mounted antenna after being combined with a metal frame of an automobile;
An L-shaped slot (6) is formed in the end, close to the antenna body, of the system floor (2);
an L-shaped microstrip feeder line (5) is arranged in the L-shaped slot (6), and two ends of the microstrip feeder line (5) are respectively connected with the short bottom edge of the trapezoid radiation patch (3) of the antenna body and the system floor (2);
the trapezoid radiation patch (3), the reverse offset strip (4), the microstrip feeder line (5) and the system floor (2) are made of metal grid materials.
Preferably, the long bottom edge of the trapezoid radiation patch (3) is about 0.12 wavelength, the wavelength is the wavelength corresponding to the central frequency of the working frequency band, and the short bottom edge wavelength is about 0.04 wavelength, so that the problem that radiation zero points exist in the horizontal direction due to the inclination angle of the front glass of the automobile can be effectively solved.
Preferably, the height of the trapezoidal radiating patch (3) is about 0.368 wavelength;
Preferably, the reverse cancellation strip adopts a bending line, so that the cancellation of current is realized, the total length of the reverse cancellation strip is about 1.22 wavelengths, and the high gain of the antenna is caused by superposition of the homodromous radiation modes of the two trapezoidal radiation patches (3).
The antenna and the system floor have the same layer, the metal areas are designed by adopting metal grids to realize the transparency, the transparency of the antenna and the radiation efficiency of the antenna have a contradictory relation, and the transparent metal grid material with the thickness of 4um and the square resistance of 0.12 ohm/≡is preferably selected, so that the transparency theory can reach about 70%, and the radiation efficiency can reach more than 65%.
The length of the long bottom edge of the trapezoid radiation patch determines the zero point improving effect of the radiation pattern, the longer the length of the trapezoid radiation patch is, the better the improving effect of the zero point is, but the larger the antenna volume is, the cost is increased, the width of the trapezoid radiation patch is increased at the same time, the wider impedance matching bandwidth is brought, and therefore the longer bottom edge length is selected to be about 0.12 wavelength in consideration of compromise.
The counter offset strip adopts a bending line mode to realize the mutual offset of currents in the strip, prevents the counter offset strip from generating a radiation mode opposite to the radiation patch so as to reduce the antenna gain, and can well control the offset effect by adjusting the total length of the counter offset strip and the distance between bending lines, so that the strip which is bent 19 times is preferably adopted as the counter offset strip.
The invention adopts a coplanar waveguide (CPW) feeding mode, and can adjust the impedance matching performance of the antenna by adjusting the sizes of the slot of the floor and the feeder line of the antenna.
The invention provides a high-gain vehicle-mounted transparent antenna with an improved directional diagram, and the optical transparency principle is that transparent substrate materials (PC substrate, OCA adhesive and PET film) are selected, and the electrical interconnection and optical transparency of metal layers are realized by utilizing a metal grid formed by metal wires. The optical transparency is related to the distance between the metal grids and the thickness of the metal wires, and the antenna radiation efficiency and the optical transparency can be effectively considered by selecting a proper metal grid process. The antenna and the substrate are designed to be L-shaped for better embedding into the vehicle window and connecting with the feeder line. The main body radiation part of the antenna is two trapezoidal radiation patches, the working frequency of the antenna is determined by adjusting the length of the trapezoidal radiation patches, and the bandwidth of the antenna can cover the frequency range of 0.74GHz-0.87GHz by adjusting the width of the trapezoidal radiation patches. The radiation working principle is that the radiation modes of two serially connected radiation patches are in the same direction by adjusting the shape and the length of the reverse offset strip, so that the effects of high gain are formed by superposition. Finally, the pattern zero point on the horizontal plane can be obviously improved (3 dB improvement) by replacing the design of the traditional rectangular radiation patch with a trapezoidal patch.
The high-gain vehicle-mounted transparent antenna with the improved directional diagram has the advantages that the high-gain vehicle-mounted transparent antenna is of a planar structure in terms of size and appearance, and compared with a traditional vehicle-mounted antenna, the high-gain vehicle-mounted transparent antenna has optical transparency and is more hidden, so that the high-gain vehicle-mounted transparent antenna can be better integrated with a vehicle body, and the purposes of reducing wind resistance and facilitating installation are achieved. In performance, the high gain is realized by utilizing the superposition effect of the series connection of the double radiation patches, the omnidirectional radiation pattern has good signal receiving capability, the trapezoidal radiation patches are designed to have wider working bandwidth and pattern zero point improvement performance, and the transparent antenna has wide prospect in application scenes such as indoor glass, furniture integration and the like.
Drawings
FIG. 1 is a schematic diagram of the structure of a high gain vehicle-mounted transparent antenna with improved pattern null in accordance with the present invention;
FIG. 2 is a laminated information diagram of a high gain vehicle mounted transparent antenna with improved pattern null in accordance with the present invention;
FIG. 3 is a schematic diagram of the structure of a high gain vehicle-mounted transparent antenna (comparative example) without pattern null improvement;
FIG. 4 is a schematic diagram of a metal mesh employed by the designed high gain vehicle mounted transparent antenna;
FIG. 5 is a dimension illustration of a metal mesh cell employed by the designed high gain vehicle mounted transparent antenna;
FIG. 6 is a graph of the reflection coefficient of a high gain vehicle mounted transparent antenna designed with pattern null improvement;
FIG. 7 is a radiation pattern of the vehicle-mounted transparent antenna at 800 MHz;
Wherein 1 is a substrate, 1-1 is a PET film layer, 1-2 is an OCA adhesive layer, 1-3 is a PC substrate, 2 is a system floor, 3 is a trapezoid radiation patch, 4 is a reverse offset strip, 5 is a microstrip feeder line, and 6 is an L-shaped slot.
Detailed Description
For further explanation, the present invention is further explained by referring to examples and the structures of the drawings, but the present invention is not limited to this embodiment.
Fig. 1 is a schematic diagram illustrating a high-gain vehicle-mounted transparent antenna with improved pattern zero point, which specifically includes a substrate 1, an antenna body, and a system floor 2;
The substrate 1 is L-shaped and comprises a transverse part and a longitudinal part, and the substrate 1 comprises three parts, namely a PET film layer 1-1, an OCA adhesive layer 1-2 and a PC substrate layer 1-3 which are taken as a metal grid growth substrate in figure 2 from top to bottom.
The antenna body is located on the upper surface of the substrate 1 and comprises two axisymmetrically arranged trapezoidal radiation patches 3, a reverse offset strip 4 and a microstrip feeder 5, the long bottom edges of the two trapezoidal radiation patches 3 are respectively connected with two ends of the reverse offset strip 4, and the radiation main body part is formed by connecting the two trapezoidal radiation patches 3 through the reverse offset strip 4.
The system floor 2 is positioned on the upper surface of the base plate 1, the system floor 2 is L-shaped, after being combined with an automobile metal frame, the system floor is suitable for feeding of an automobile antenna, and the system floor and the feeder are designed into L-shaped metal frame structures which can be embedded into automobile windows so as to hide the feeder. The system floor 2 comprises a transverse metal ground and a longitudinal metal ground, wherein the longitudinal metal ground is the same as the longitudinal part of the base plate 1 in shape and size, and completely covers the longitudinal part of the base plate 1, the transverse metal ground is positioned at one end of the transverse part of the base plate 1, the length of the transverse metal ground is smaller than the length of the transverse part of the base plate 1, and the width of the transverse metal ground is equal to the width of the transverse part of the base plate 1.
The end of the system floor 2, which is close to the antenna body, is provided with an L-shaped slot;
An L-shaped microstrip feeder line 5 is arranged in the L-shaped slot, and two ends of the microstrip feeder line 5 are respectively connected with the short bottom edge of the trapezoid radiation patch 3 of the antenna body and the system floor 2;
The trapezoid radiation patch 3, the reverse offset strip 4, the microstrip feeder 5 and the system floor 2 are made of metal grid materials in fig. 4, the thickness of the trapezoid radiation patch is only H MM =4um, the trapezoid radiation patch is made to be optically transparent by an ultrathin metal grid structure, the transparency can reach more than 70%, the square resistance is only 0.12 Ω ∈8/, and the low square resistance can bring high antenna radiation efficiency.
The dielectric substrate is L-shaped, the width of the dielectric substrate far away from the floor is W sub =50 mm, the long side is L sub =420 mm, and the short side is W g1 =25 mm. The system floor was also L-shaped and was L g = 73mm long, W g1+Wg2 = 45mm wide and W g2 = 20mm wide at the gap. By etching an L-shaped slot on the system floor and feeding by adding an L-shaped metal microstrip line, wherein the feed line width is 1mm, the width W s of the L-shaped slot is=3 mm, the two-stage lengths of the L-shaped slot are L s1＝34mm,Ls2 =26.5 mm respectively, and the length of the microstrip feed line 5 is slightly longer than that of the L-shaped slot. The two trapezoidal radiation patches 3 are distributed on two sides of the reverse offset strip 4, and the two trapezoidal radiation patches 3 are arranged so that the two working currents are in the same direction, and the radiation modes are mutually overlapped to achieve the purpose of improving the antenna gain, and the reverse offset strip 4 enables the radiation modes opposite to the radiation patches 3 to be offset inside in a bending mode. The long bottom edges of the two trapezoidal radiating patches are placed close to each other, the long bottom edge W p2 =45 mm, and the waist length L p2 =138.8 mm. The zero point improvement performance of the pattern is determined by the width of W p2, and the greater the value of W p2, the better the zero point improvement effect of the pattern, but 45mm is preferably selected as the bottom side length of the trapezoidal radiation patch in view of cost and antenna size. The design of the reverse offset strip adopts a space-saving winding design, the line width W b =3 mm, the distance g between two bending lines=2.6 mm, and the partial line length L b =5.6 mm, and the radiation phases of two rectangular radiation patches can be well controlled by changing the total length of the reverse offset strip, so that the high gain performance is realized.
Here, as a comparative example of fig. 3, a trapezoid shape of the radiating patch 3 is changed from a trapezoid shape to a rectangular shape of length L p1 =138 mm and width W p1 =15 mm on the basis of the antenna of fig. 1. The length L p1 of the radiating patch mainly determines the antenna operating frequency, and the width mainly determines its operating bandwidth.
Fig. 4 is a schematic microscopic view of a metal mesh, and by the configuration of the regularly arranged ultra-thin metal mesh, the optical transparency of the antenna layer is realized, the transparency can reach more than 70%, and the requirements of being applied to vehicle-mounted glass but not affecting the sight of people in the vehicle can be met. Fig. 5 is a schematic structural diagram of a metal grid unit, which is composed of metal lines arranged perpendicularly and crosswise, and the line width W m and the line distance g M are related to the metal grid process. The two indexes also affect the transparency of the transparent antenna, and the transparency is higher when the line width is narrower and the line distance is larger, but the metal loss is also increased, another factor determining the metal loss is H MM, and generally, the metal loss of the antenna is smaller when the H MM is larger, so that the radiation efficiency of the finally designed antenna is higher and the performance is better. The main purpose of the PET film layer 1-1 is to attach a metal mesh layer to enable stable growth, the thickness is H PET =50 um, the dielectric constant is 3.4, and the loss angle is 0.008. The OCA adhesive layer 1-2 is used for connecting a PET film and a PC substrate, and the thickness of the adhesive layer is selected from the adhesive layer with H OCA =100 um, the dielectric constant is 3.8, and the loss angle is 0.005.PC substrate layers 1-3 have a thickness H PC = 1.5mm, a dielectric constant of 2.9, and a loss angle of 0.01.
FIG. 6 is a graph of the reflectance of the present invention as a function of frequency. It can be seen that the reflection coefficient is below 15dB in the preset working frequency band (0.74 GHz-0.87 GHz) of the antenna, and the-10 dB impedance bandwidth reaches about 300MHz to reach the design target. Fig. 7 is a horizontal plane pattern comparison of the transparent vehicle antenna without zero point improvement of fig. 1, and the antenna of the invention is characterized by low sheet resistance, high transparency, high gain, simple structure, easy installation, etc.
The invention provides a high-gain vehicle-mounted transparent antenna with an improved directional diagram. The base plate is transparent material (PC, OCA, PET) to and the metal layer adopts metal grid design, consequently has good optical transparency, can be fine obtain using on-vehicle antenna, and it has pleasing to the eye when installing in front windshield in comparison traditional antenna, easily installs, does not influence advantages such as car self windage. Meanwhile, the invention realizes high gain by connecting two radiation patches in series and adjusting the shape of the reverse offset strip so that the currents of the two radiation patches are in the same direction, and the high gain means strong signal receiving/transmitting capability. In addition, the shape of the radiation patch is changed into a trapezoid, so that the problem that zero point exists in a horizontal plane directional diagram due to inclined placement of the antenna is solved, and the condition that no signal exists at certain specific angles is avoided. The advantages of the invention can be more suitable for the requirements of high channel capacity, high data throughput and antenna attractiveness of the antenna system in the modern 5G vehicle-mounted wireless communication system than other schemes.
The foregoing is merely one specific embodiment of the present invention and is merely illustrative of the design method and core design concept of the present invention. However, the decoupling scheme provided by the invention is not limited to the high-gain antenna with a specific working frequency band in the embodiment, the working frequency of the antenna can be adjusted by adjusting the length of the antenna radiation patch, and the working bandwidth can be adjusted by adjusting the width of the antenna radiation patch. Meanwhile, the antenna is not limited to a specific medium substrate, and can be suitable for different application scenes according to different specific applications, such as other application scenes needing transparent antennas, such as indoor windows and the like. In addition, transparent antennas with different transparency can be obtained by adjusting the degree of the density of the metal grids in the metal grid process, so that the transparent antennas are suitable for application occasions with different transparency requirements. It should be noted that it will be apparent to those skilled in the art that the present invention may be modified in an optimized manner without departing from the principle of the invention, and such modified embodiments fall within the scope of the appended claims. The present invention is not limited in scope by the specific embodiments, and all inventions conceived to be a concept of the invention are intended to be protected by the following claims so long as various changes occur within the spirit and scope of the invention as defined and defined by the appended claims to those skilled in the art.
Claims (7)
1. The high-gain vehicle-mounted optical transparent antenna with the improved directional diagram is characterized by comprising a substrate (1), an antenna body and a system floor (2);
The substrate (1) is L-shaped, and sequentially comprises a PET film layer (1-1), an OCA adhesive layer (1-2) and a PC dielectric substrate (1-3) which are used as a metal grid growth substrate from top to bottom;
the antenna body is positioned on the upper surface of the substrate (1) and comprises two axisymmetrically arranged trapezoidal radiation patches (3), a reverse offset strip (4) and a microstrip feeder line (5);
The long bottom edges of the two trapezoid radiation patches (3) are respectively connected with two ends of the reverse offset strip (4);
The system floor (2) is positioned on the upper surface of the base plate (1), and the system floor (2) is L-shaped and is suitable for feeding of a vehicle-mounted antenna after being combined with a metal frame of an automobile;
An L-shaped slot (6) is formed in the end, close to the antenna body, of the system floor (2);
an L-shaped microstrip feeder line (5) is arranged in the L-shaped slot, and two ends of the microstrip feeder line (5) are respectively connected with the short bottom edge of the trapezoid radiation patch (3) of the antenna body and the system floor (2);
The trapezoid radiation patches (3), the reverse offset strips (4), the microstrip feeder lines (5) and the system floor (2) are made of metal grid materials, the reverse offset strips (4) are bent lines, the total length of the reverse offset strips (4) is 1.22 wavelengths, the wavelengths are wavelengths corresponding to the center frequency of a working frequency band, and the radiation modes of the two trapezoid radiation patches (3) are in the same direction by adjusting the shape and the length of the reverse offset strips (4), so that high gain is formed by superposition.
2. An antenna according to claim 1, characterized in that the long base of the trapezoidal radiating patch (3) is 0.12 wavelength, the wavelength being the wavelength corresponding to the centre frequency of the operating band, and the short base is 0.04 wavelength.
3. An antenna according to claim 1, characterized in that the height of the trapezoidal radiating patch (3) is 0.368 wavelength, which is the wavelength corresponding to the centre frequency of the operating band.
4. The antenna of claim 1, wherein the metal mesh material has a thickness of 4um and a sheet resistance of 0.12 Ω/≡.
5. An antenna according to claim 1, characterized in that the counteracting effect of the counter counteracting strip (4) is regulated by regulating the total length of the counter counteracting strip (4) and the spacing between the meander lines.
6. An antenna according to claim 1, characterized in that the strip is folded 19 times by means of the counter-cancellation strip (4).
7. An antenna as claimed in claim 1, characterized in that the impedance matching performance of the antenna is adjusted by adjusting the dimensions of the "L" slot (6) of the system floor (2) and the microstrip feed line (5) of the antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310866291.1A CN116845552B (en) | 2023-07-14 | 2023-07-14 | A high-gain vehicle-mounted optically transparent antenna with improved radiation pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310866291.1A CN116845552B (en) | 2023-07-14 | 2023-07-14 | A high-gain vehicle-mounted optically transparent antenna with improved radiation pattern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116845552A CN116845552A (en) | 2023-10-03 |
| CN116845552B true CN116845552B (en) | 2026-04-07 |
Family
ID=88166927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310866291.1A Active CN116845552B (en) | 2023-07-14 | 2023-07-14 | A high-gain vehicle-mounted optically transparent antenna with improved radiation pattern |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116845552B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118801091B (en) * | 2024-06-16 | 2025-08-12 | 北京雷格讯电子股份有限公司 | A high-gain, low-non-circularity omnidirectional antenna based on printed oscillators |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494451A (en) * | 2018-12-29 | 2019-03-19 | 深圳市道通智能航空技术有限公司 | A kind of antenna and unmanned vehicle |
| WO2023058788A1 (en) * | 2021-10-06 | 2023-04-13 | 엘지전자 주식회사 | Wideband antenna arranged on vehicle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019088792A1 (en) * | 2017-11-06 | 2019-05-09 | 동우화인켐 주식회사 | Film antenna and display device including same |
| WO2020007746A1 (en) * | 2018-07-02 | 2020-01-09 | Agc Glass Europe | Vehicle antenna glazing |
| US12009570B2 (en) * | 2019-06-26 | 2024-06-11 | Agc Glass Europe | Vehicle antenna glazing |
| CN216145765U (en) * | 2021-09-24 | 2022-03-29 | 广东汇天航空航天科技有限公司 | Antenna and vehicle with same |
-
2023
- 2023-07-14 CN CN202310866291.1A patent/CN116845552B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494451A (en) * | 2018-12-29 | 2019-03-19 | 深圳市道通智能航空技术有限公司 | A kind of antenna and unmanned vehicle |
| WO2023058788A1 (en) * | 2021-10-06 | 2023-04-13 | 엘지전자 주식회사 | Wideband antenna arranged on vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116845552A (en) | 2023-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7822935B2 (en) | Multilayer glass patch antenna | |
| US6008762A (en) | Folded quarter-wave patch antenna | |
| JP3926089B2 (en) | In-vehicle planar antenna device | |
| CN112542691B (en) | High-integration vehicle-mounted antenna group | |
| CN107086350B (en) | Impedance surface treatment for reducing surface waves and improving antenna gain on glass | |
| CN103515710B (en) | Dual-band slot antenna based on half-mode substrate integrated waveguide | |
| US12009570B2 (en) | Vehicle antenna glazing | |
| CN116845552B (en) | A high-gain vehicle-mounted optically transparent antenna with improved radiation pattern | |
| CN119487698A (en) | Antenna module configured in a vehicle | |
| KR102931618B1 (en) | Antenna module disposed in vehicle | |
| CN116454601A (en) | Glass antenna, vehicle glass and vehicle | |
| CN115173030A (en) | 5G miniaturized broadband monopole antenna | |
| KR100532587B1 (en) | Linearly polarized microstrip patch array antennas with metallic strips on a superstrate to increase an antenna gain | |
| CN218448431U (en) | 4G full-band high-gain omnidirectional antenna | |
| US10608341B2 (en) | Wideband asymmetric slot antenna | |
| US20220263219A1 (en) | Laminated glass antenna structure | |
| CN119547273A (en) | Antenna module configured in a vehicle | |
| CN114824788A (en) | Vehicle-mounted antenna | |
| CN116646719B (en) | A millimeter-wave microwave common-aperture transparent antenna | |
| CN111430909A (en) | Ultra-wide band planar antenna | |
| US20250055174A1 (en) | Antenna | |
| CN223771332U (en) | A small Vivaldi antenna | |
| US20070273608A1 (en) | Anisotropic frequency selective ground plane for orthogonal pattern control of windshield antenna | |
| EP3512038A1 (en) | A broadband lte antenna system for a vehicle | |
| JPH0460364B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |